Multiple outs is one of the oldest, classic, and powerful tools in mentalism. Several classic effects and routines in the history of mentalism and magic are built around multiple outs. Some of the standard tools like a pocket index were born out of this very concept of multiple outs.

In this manuscript, we will explore the 'DOUBT' method for constructing multiple outs. This is a technique or strategy which makes multiple outs much easier and more effective for many situations. This technique uses double blank business cards and uses the core nature of these double blank cards very potently. The number of outs to be carried also gets reduced by half, at least.

This is a tool that can be used for many multiple-out applications effectively. A set of 5 routines is also explained.